Medway · England
Sand Mastic in Hoo St Werburgh
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Hoo St Werburgh and across Medway. Fully insured, ARBOMaster approved and guaranteed for a year.
- Mastic dropping out of the joint
- Open joints round the window box
- Draughts and rain around sash boxes
How it works
Before we leave, we go over the finished joints with you. The work normally takes a few hours per window, depending on the condition of the joints, depending on how much there is to do. A visit to Hoo St Werburgh is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Let us know about parking restrictions
- Keep children and pets away from the work area
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work before giving you a price.
Related advice
Sand mastic in Hoo St Werburgh, done properly
Fresh sand mastic forms a skin quite soon but full hardening takes longer. Traditionally, sand mastic is left unpainted, so ask us before you decorate. Common call-outs are for mastic worn away on windows facing the weather and draughty sash windows at the surround, across timber door frames, stone surrounds and tenement windows.
In smaller places like Hoo St Werburgh, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. The right sealant depends on the frame and on what it sits in.
You’re covered for a year from the day we finish. If anything is not right with it, phone 0345 464 0079 or drop us an email.
- Place
- Hoo St Werburgh (ME3)
- Wider area
- Medway
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Landlord and commercial work in Hoo St Werburgh
For anyone letting property in or around Hoo St Werburgh, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
Also near Hoo St Werburgh
More services for Hoo St Werburgh
Hoo St Werburgh questions
I let a flat near Gillingham (Kent) station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Is sand mastic in a coastal place like Hoo St Werburgh any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. Walls facing the sea are normally the first to need attention.
How long does sand mastic take to go off?
It takes a while. It skins first and hardens fully later and we will give you an idea for your job.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that normally means someone at home.
Do the sealants smell?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
Are you ARBOMaster approved?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Do you remove the old sealant?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Quotes for sand mastic in Hoo St Werburgh
Your quote is based on your job. We take into account:
- The number and length of the joints
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
- How easy the joints are to reach
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we’ll explain the quote if you ask.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Photos by email, if that’s easy
- If someone has resealed it before
- Where the job is, and your postcode
- Access, such as stairs, a lift or height
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Signs you need sand mastic in Hoo St Werburgh
Over the years, sand mastic weathers. It dries out, cracks and loses its grip on the stone or timber.
Signs it’s time to call us include:
- Cement or filler used on old window joints that has cracked
- Draughts and rain around sash boxes
- Open joints round the window box
- Window mastic to renew ahead of painting
For site and facilities teams at buildings such as Hoo St Werburgh Primary School and Marlborough Centre, the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- What insurance they hold
- How the joint is cleaned and prepared
- Whether VAT is included
- How much experience the applicator has
What sealant work can’t fix
Sealant is not the answer to every problem, and we will tell you before any work starts. Sealant will not put right:
- Damaged stone surrounds
- Timber that has rotted
- Planning or listed building consent (your local planning authority decides)
If you’re not sure, just phone 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Where we work in Hoo St Werburgh
- Period & listed homes
- Sash and case windows
- Timber door frames
- Tenement windows
- Stone surrounds
- Brick reveals
Frames and glazing around Hoo St Werburgh
Hoo St Werburgh is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around older windows and doors, especially on the side facing the sea. With historic houses such as Restoration House (about 3.6 miles south-west) nearby, there’s older building stock in the area around Hoo St Werburgh as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Letting a property close to Gillingham (Kent) station? Then any sash windows need sound mastic to keep draughts and rain out. For an older house near a landmark such as Church of St Werburgh, the joint between an old wall and a newer frame is normally the first place rain gets in.
Hoo St Werburgh is about 4 miles north-east of Rochester, in Medway. If you need sand mastic in Hoo St Werburgh, please call 0345 464 0079 or email us for a quick quote. We are based in Crawley and cover Medway. 68 places in Medway are on our list. We also work in Chelmsford, about 22 miles from Hoo St Werburgh.
Work in ME3 works the same way as everywhere else we cover. Local streets include Walters Road, St Johns Road and Bell's Lane, all of which we cover. We also cover Chattenden (1 mile west), Sharnal Street (1 mile north-east), Lower Upnor (2 miles south-west), Kingsnorth (2 miles east) and Tunbridge Hill (2 miles north-east). Larger places within reach include Gillingham (4 miles south), Chatham (5 miles south), Rochester (4 miles south-west), Rainham (5 miles south-east), Strood (4 miles south-west) and Luton (4 miles south). Being one of Medway’s larger places, Hoo St Werburgh has every kind of property, from flats to offices.
What’s near Hoo St Werburgh
Locally, jobs take us to homes and businesses close to The Hundred of Hoo Academy and The Chequer's Public House and the streets around them. Hoo St Werburgh’s nearest station is Gillingham (Kent) station, about 2.7 miles south. A little further out are Upnor Castle (1.9 miles south-west) and Huguenot Museum (3.5 miles south-west). The countryside around Hoo St Werburgh includes Bishop Saltings and Gad's Hill.
Why it’s worth doing now in Hoo St Werburgh
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. Around Hoo St Werburgh, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
Doing several joints on one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will send you a clear quote for the lot.
Why Hoo St Werburgh clients choose us
- Sanitary silicone with an anti-fungal additive in wet areas
- Old sealant always removed completely
- 20+ years of sealant experience
- Approved under the ARBOMaster scheme
Take a look at what affects the cost and customer reviews.
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Find out about consent before window work on a listed home
- Clear gutters so water doesn’t pour onto the windows
- Avoid patching sand mastic with silicone
- Inspect the joints round the windows every year or so
Do not touch or press the mastic while it hardens. It skins over quickly but needs longer to fully harden.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.